<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>2_不用函数柯里化的实现</title>
    </head>
    <body>
        <!-- 准备好一个“容器” -->
        <div id="test"></div>

        <!-- 引入react核心库 -->
        <script type="text/javascript" src="../js/react.development.js"></script>
        <!-- 引入react-dom，用于支持react操作DOM -->
        <script type="text/javascript" src="../js/react-dom.development.js"></script>
        <!-- 引入babel，用于将jsx转为js -->
        <script type="text/javascript" src="../js/babel.min.js"></script>


        <script type="text/babel">
            //创建组件
            class Login extends React.Component {
                //初始化状态
                state = {
                    username: '', //用户名
                    password: '' //密码
                }

                //保存表单数据到状态中
                saveFormData = (dataType, event) => {
                    this.setState({[dataType]: event.target.value})
                }

                //表单提交的回调
                handleSubmit = (event) => {
                    event.preventDefault() //阻止表单提交
                    const {username, password} = this.state
                    //模板字符串 ``
                    alert(`你输入的用户名是：${username},你输入的密码是：${password}`)
                }

                render() {
                    return (
                        <form onSubmit={this.handleSubmit}>
                            <label>用户名：
                                <input onChange={event => this.saveFormData('username', event)} type="text"
                                       name="username"/>
                            </label>
                            <label>密码：
                                <input onChange={event => this.saveFormData('password', event)} type="password"
                                       name="password"/>
                            </label>
                            <button>登录</button>
                        </form>
                    )
                }
            }

            //渲染组件
            ReactDOM.render(<Login/>, document.getElementById('test'))
        </script>
    </body>
</html>